Keith Cooper digs into the struggles and successes of modifying gravity, 40 years since its conception
Read article: Cosmic combat: delving into the battle between dark matter and modified gravity
New analysis suggests a hypothetical force-carrier model matches data better than the Standard Model, though further work is needed
Read article: Dark photons could explain high-energy scattering data
Cluster known as El Gordo formed too soon to be explained by dark matter-based theories, astrophysicists claim
Read article: Are giant galaxy clusters defying standard cosmology?
Not everyone agrees that dark matter’s days are numbered
Read article: Binary-star study favours modified gravity over dark matter
Observation could explain why there appears to be lots of ancient galaxies
Read article: Stars powered by dark matter may have been seen by the JWST
Novel detector would target exceptionally light relatives of the axion particle
Read article: Tiny levitating spheres could join the hunt for dark matter
Nicole Bell is a dark-matter physicist and the new president of the Australian Institute of Physics
Read article: Ask me anything: Nicole Bell – ‘Collaboration is the norm: we achieve more when we work together’
The monstrous black holes at the heart of every galaxy could be the source of dark energy, the force accelerating the expansion of the universe
Read article: New theory links supermassive black holes and dark energy
Excess cosmic optical background could come from axions
Read article: New Horizons probe may have observed light from decaying dark matter
Galactic distortions could point to alternative theories of gravity
Read article: Dwarf galaxies appear to be missing dark-matter halos
